Using App Inventor Java Bridge

I tried to use the App Inventor Java Bridge to convert a .aia file to .java file but no matter which project I choose from the list of projects I have or no matter how simple they are, an error message saying "The blocks area did not load properly. Changes to the blocks for screen 5649141682143232_Screen1 will not be saved." is displayed and hence when I download the Java file, only the components from the Designer's Tab are created and the body of the dispatchEvent is 'return false;' I just wanted to know if there is something that I need to do to convert .aia to .java through the Java Bridge or is there another way to convert the .aia file to any sort of file, in general. Thanks in advance

I suggest you do a search and read what has already been said about java bridge....

https://community.appinventor.mit.edu/search?q=java%20bridge